RingBuffer.h

00001 //
00002 //  RingBuffer.h ... General purpose ring buffer library
00003 //
00004 //  Copyright 2012  Yoji KURODA
00005 //
00006 //  2009.11.13 ... Originally written in C by Y.Kuroda for Renesas H83664
00007 //  2012.08.31 ... Code convert for mbed in C++
00008 //
00009 
00010 #ifndef _RINGBUFFER_H
00011 #define _RINGBUFFER_H
00012 
00013 class RingBuffer {
00014 
00015   protected:
00016     unsigned char* buf;
00017     unsigned char* sp;
00018     unsigned char* ep;
00019 
00020 
00021     int bufsize;
00022 
00023   public:
00024     RingBuffer(int _bufsize=100);
00025     ~RingBuffer();
00026     
00027     int save(unsigned char c);
00028     unsigned char read(void);
00029     int check(void);
00030     int buffersize(void){return bufsize;};
00031     int full(void){ return (check()>=bufsize-1 ? 1 : 0); };
00032 };
00033 
00034 
00035 #endif /* _RINGBUFFER_H */
00036 
00037